Properties (11)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
Patent
|
| gptkbp:hasAssignee |
gptkb:Thomas_A._Edison,_Inc.
|
| gptkbp:hasFilingDate |
1916-01-31
|
| gptkbp:hasInventor |
gptkb:Thomas_Edison
|
| gptkbp:hasLegalStatus |
Expired
|
| gptkbp:hasPatentNumber |
1234609
|
| gptkbp:hasPublications |
1917-07-10
|
| gptkbp:hasTitle |
Method of and apparatus for producing a sound
|
| https://www.w3.org/2000/01/rdf-schema#label |
US 1234609 U2
|
| gptkbp:isFiledIn |
gptkb:United_States
|
| gptkbp:isRelatedTo |
Sound recording technology
|